Perform Pre-Installation Tasks for Unified Communications Manager Nodes
Perform all pre-installation tasks to ensure that you can successfully install the Cisco Unified Communications Manager (Unified Communications Manager).
Review the installation requirements and record the configurations settings for each server that you plan to install.
For every node in your cluster, create virtual machines using the Virtual Server Template (OVA file) recommended for your current release.
Different OVA files are available; choose the correct OVA file based on the environment in which you are deploying Cisco Unified Communications Manager.
Place the installation ISO file in a location where the virtual machine can access it and edit the virtual machine's DVD drive to map to the file. Select the option to mount the DVD drive when you power on the virtual machine.
If you are installing a cluster or adding a node, verify that the links between servers meet the 80-ms round-trip time (RTT) requirement and that you have enough bandwidth to support database replication.
If you are getting the system time from an NTP server (mandatory for VMware deployments), verify that the publisher node can synchronize with the NTP server before you install a subscriber node. Log into the Command Line Interface on the publisher node and enter the following command: utils ntp status
For more information, see the Command Line Interface Reference Guide for Cisco Unifed Communications Solutions.
If your firewall is in the routing path, disable the firewall between nodes, if possible. Also, increase the firewall timeout settings until after you complete the installation.
Do not run Network Address Translation (NAT) or Port Address Translation (PAT) between servers where you are installing Cisco Unified Communications Manager.
Ensure that the network interface card (NIC) speed and duplex settings on the switch port are the same as those that you plan to set on the new server.
For GigE (1000/FULL), you should set NIC and switch port settings to Auto/Auto; do not set hard values.
Enable PortFast on all switch ports that are connected to Cisco servers. With Portfast enabled, the switch immediately brings a port from the blocking state into the forwarding state by eliminating the forwarding delay [the amount of time that a port waits before changing from its Spanning-Tree Protocol (STP) learning and listening states to the forwarding state].
If you use DNS, verify that all servers on which you plan to install Cisco Unified Communications Manager are properly registered in DNS.
If you are using a server that is running VMware EX/ESXi and the motherboard has an ICH10 onboard SATA controller, you must disable the SATA controller in the BIOS. The ICH10 onboard SATA controller is not supported by EX/ESXi.
Obtain a license file.
Configure any subscriber nodes on the publisher node before you install a subscriber node.